How Your Water Heater Works - Rheem Electric Domestic Water Heater Installation And Owner's Manual

HOW YOUR WATER HEATER WORKS

Water is stored in a vitreous enamel lined steel cylinder and heated by the
electric immersion heating unit. The thermostat controls the temperature.
Automatic safety controls are fitted to the water heater to provide safe and
efficient operation.
MAINS PRESSURE
The water heater is designed to operate at mains pressure by connecting
directly to the mains water supply. If the mains supply pressure in your area
exceeds that shown on page 16, a pressure limiting valve must be fitted. The
supply pressure should be greater than 350 kPa for true mains pressure
operation to be achieved.
THERMOSTAT
The thermostat automatically controls the electricity supply to the heating unit
so a constant temperature is maintained. The thermostat and its protective over
temperature cut out is mounted inside the front cover of the water heater. There
is no need to switch the water heater off when it is not in use, except when you
are on an extended holiday. The thermostat is fully automatic and power is only
used when heating is required.
SINGLE ELEMENT MODEL
This type of water heater has one
heating unit with its own thermostat.
The heating unit is at the base of the
water heater.
•
Continuous electricity supply
This type of connection is suited to
where the storage capacity is less
than the normal daily usage.
•
Off-Peak electricity supply
This type of connection will only
allow heating to occur during set
hours. A volume of water sufficient
for the day's total use is heated and
stored. This type of heating will be
more economical due to reduced
tariffs by the electricity authority.
8